{"id":119941,"date":"2024-09-25T15:43:10","date_gmt":"2024-09-25T13:43:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-openbsd-zapretili-ispolzovanie-nulevyh-simvolov-v-shell-skriptah"},"modified":"2024-09-25T15:43:10","modified_gmt":"2024-09-25T13:43:10","slug":"v-openbsd-zapretili-ispolzovanie-nulevyh-simvolov-v-shell-skriptah","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/v-openbsd-zapretili-ispolzovanie-nulevyh-simvolov-v-shell-skriptah","title":{"rendered":"\u00cen OpenBSD s-a interzis utilizarea caracterelor nule \u00een scripturile shell","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Theo de Raadt a introdus o modificare care interzice utilizarea caracterului cu cod nul \u00een shell scripturi, procesate de interpretorul de comenzi ksh folosit \u00een mod implicit. Prezen\u021ba caracterelor nule \u00een scripturi va duce acum la terminarea execu\u021biei cu un mesaj de eroare, cu excep\u021bia cazurilor \u00een care acestea sunt plasate \u00een datele ata\u0219ate la sf\u00e2r\u0219itul fi\u0219ierului, dup\u0103 cod. Modificarea este inclus\u0103 \u00een ramura OpenBSD-Current, pe baza c\u0103reia va fi format\u0103 versiunea OpenBSD 7.6. <\/p>\n

Se remarc\u0103 faptul c\u0103 o astfel de modificare va elimina incertitudinea comportamentului legat\u0103 de procesarea caracterului nul \u00een codul scris \u00een limbajul C, care utilizeaz\u0103 \u0219iruri unde byte-ul nul este folosit pentru a indica sf\u00e2r\u0219itul \u0219irului. Studiul proces\u0103rii caracterului nul \u00een diferite shell-uri a relevat c\u0103 fiecare dintre acestea a avut unul sau mai multe cazuri \u00een care byte-ul nul din datele de intrare sau din con\u021binutul variabilelor a dus la un comportament diferit fa\u021b\u0103 de celelalte shell-uri; de exemplu, unele shell-uri \u00eel ignorau, altele \u00eel \u00eenlocuiau cu un spa\u021biu, iar altele terminau analiza scriptului sau oprirea execu\u021biei.
\n
Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0422\u044d\u043e \u0434\u0435 \u0420\u0430\u0430\u0434\u0442 (Theo de Raadt) \u0434\u043e\u0431\u0430\u0432\u0438\u043b \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0435, \u0437\u0430\u043f\u0440\u0435\u0449\u0430\u044e\u0449\u0435\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0438\u043c\u0432\u043e\u043b\u0430 \u0441 \u043d\u0443\u043b\u0435\u0432\u044b\u043c \u043a\u043e\u0434\u043e\u043c \u0432 shell-\u0441\u043a\u0440\u0438\u043f\u0442\u0430\u0445, \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u043c\u044b\u0445 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u044b\u043c \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u043a\u043e\u043c\u0430\u043d\u0434\u043d\u044b\u043c \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440\u043e\u043c ksh. \u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u043d\u0443\u043b\u0435\u0432\u044b\u0445 \u0441\u0438\u043c\u0432\u043e\u043b\u043e\u0432 \u0432 \u0441\u043a\u0440\u0438\u043f\u0442\u0430\u0445 \u0442\u0435\u043f\u0435\u0440\u044c \u0431\u0443\u0434\u0435\u0442 \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442\u044c \u043a \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441 \u0432\u044b\u0432\u043e\u0434\u043e\u043c \u043e\u0448\u0438\u0431\u043a\u0438, \u0437\u0430 \u0438\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435\u043c \u0441\u043b\u0443\u0447\u0430\u0435\u0432 \u0438\u0445 \u0440\u0430\u0437\u043c\u0435\u0449\u0435\u043d\u0438\u044f \u0441\u0440\u0435\u0434\u0438 \u0434\u0430\u043d\u043d\u044b\u0445, \u043f\u0440\u0438\u043a\u0440\u0435\u043f\u043b\u0451\u043d\u043d\u044b\u0445 \u0432 \u043a\u043e\u043d\u0446\u0435 \u0444\u0430\u0439\u043b\u0430 \u0441\u043b\u0435\u0434\u043e\u043c \u0437\u0430 \u043a\u043e\u0434\u043e\u043c. \u0418\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u043e \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-119941","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47\u00cen OpenBSD a fost interzis\u0103 utilizarea caracterelor nule \u00een shell scripturi | ProHoster","description":"Theo de Raadt a introdus o modificare care interzice utilizarea caracterului cu cod nul \u00een shell scripturi, procesate de interpretorul de comenzi ksh folosit \u00een mod 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